Gets or sets the cache eviction or expiration policy of the CacheItem entry that is updated.
Assembly: System.Runtime.Caching (in System.Runtime.Caching.dll)
If you want to replace a cache entry that is about to be removed with an updated cache entry, you can optionally assign a CacheItemPolicy object to the property. The CacheItemPolicy object enables you to specify cache policy (such as expiration details) for the updated cache entry.
Available since 4.0